Distillation: processes – separatory – Distilling to separate or remove only water – From organic compound
Patent
1983-03-31
1985-12-17
Bascomb, Wilbur
Distillation: processes, separatory
Distilling to separate or remove only water
From organic compound
203 51, 203 56, 203 57, 203 58, 203 64, 203 75, 203 82, 203DIG13, 435161, B01D 340
Patent
active
045591091
ABSTRACT:
A process for producing anhydrous ethanol from an ethanol-water mixture feedstock comprising subjecting the feedstock to distillation in a first distillation zone to produce an overhead vapor of from about 80 to about 90 weight percent ethanol, subjecting the thus produced overhead vapor to extractive distillation in an extractive distillation zone to produce anhydrous ethanol vapor overhead of about 99.5 weight percent ethanol and a solvent-rich bottom stream, and stripping the solvent-rich bottom stream and recycling the thus produced lean solvent bottom stream to the extractive distillation zone and recycling the thus produced overhead vapor stream to the first distillation zone. Also disclosed is a system for performing the process.
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Lee Fu-Ming
Pahl Robert H.
Bascomb Wilbur
Phillips Petroleum Company
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